1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mina [271]
2 years ago
11

What do you use to write on a blackboard? ​

Physics
2 answers:
Archy [21]2 years ago
6 0

Answer:

Chalk

Explanation:

please mark as brainliest

Elina [12.6K]2 years ago
4 0

Answer:

Chalk, expo markers. Why?

You might be interested in
Suppose a mad scientist went back in time to the beginning of the solar system and caused the newly formed Mars and Venus to swi
Black_prince [1.1K]

Answer:

Mars2   illuminated side of the planet is very  heat, dark side very cool

Venus 2 a warm planet with a constant temperature across the entire surface

Explanation:

For this hypothetical case, when changing the planets they are changed with their current characteristics.

Case of Mars2

In this case, there is a planet with a very thin atmosphere, so the solar radiation reaches the ground without damping it, causing a lot of noise, so the illuminated side of the planet is very heat and when the dark side turns due to the little atmosphere it loses everything the heat for which it is very cold.

This thermal stress between the two sides of the planet continues constantly creating possible fruit trees in its rocky systems.

Case of Venus 2

The planet has a high atmospheric density, but it is very far from the sun, so the amount of radiation that arrives slightly warms the planet, but due to the thin atmosphere the losses for the dark period are very small, so the entire planet it is heated until it reaches an almost uniform temperature over its entire surface.

In this case we have a warm planet with a constant temperature across the entire surface, regardless of which side is lit.

8 0
3 years ago
I<br>Cghggbbbtffhhtrf bvbbjkko
adelina 88 [10]

kzkjskßkjxjdkxkdksk

Explanation:

jsjsjskskkskfj

5 0
3 years ago
The back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. The walls of the tank are n
monitta

Answer:

i know the questin but i got to try and find it

Explanation:

5 0
3 years ago
What is the difference between a wedge and a screw?
Anvisha [2.4K]
<span>A wedge is a double sided screw basically. Therefore, the difference is the number of sides.</span>
7 0
3 years ago
The third floor of a house is 8m above street level. How much work is needed to move a 136kg refrigerator to the third floor?
jonny [76]

m = Mass of the refrigerator to be moved to third floor = 136 kg

g = Acceleration due to gravity by earth on the refrigerator being moved = 9.8 m/s²

h = Height to which the refrigerator is moved  = 8 m

W = Work done in lifting the object

Work done in lifting the object is same as the gravitational potential energy gained by the refrigerator. hence

Work done = Gravitation potential energy of refrigerator

W = m g h

inserting the values

W = (136) (9.8) (8)

W = 10662.4 J



8 0
3 years ago
Other questions:
  • Which location would allow the least amount of water to be absorbed into the ground ?
    11·2 answers
  • The Hubble space telescope has been maintained by which of these?
    14·1 answer
  • Explain why the energy in the sun moves out toward the surface
    8·1 answer
  • How do i do this? i don’t understand
    9·1 answer
  • How is Venus’ rotation different than most planets? Question 3 options: A.It spins the opposite direction of most planets. B.It
    7·1 answer
  • A woman lifts a barbell 2.0 m in 5.0 s. If she lifts it the same distance in 10 s, the work done by her is:______
    6·1 answer
  • Two plane mirrors are facing each other. They are parallel, 6 cm apart, and 24 cm in length, as the drawing indicates. A laser b
    12·2 answers
  • 4.
    15·2 answers
  • Can someone help with these?
    7·1 answer
  • How does alpha particles transfer energy to their surroundings?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!